Controlling means for automatic train-stops.



H, S. FOLKER.

AMS PDR Au "I MMI() TRAIN STOIS,

COIITIIOLLING IJIE APPLICATION FILED )AI-1.26. I91G.

H. s. ioLKEn.

CONTROLLING MEANS FOR AUTOMATIC TRAIN STOPS.

APPLICATION man |AN.26. 191s.

1 ,284,286. Patented Nov. 12, 19m

2 SHEETS-SHEET 2- WITNESS nl A77' NEY gus Howfm s. Hmmm, 0F QROVELLE, CALIFORNIA, Asswmm, To THE minou/5.1;. SAFETY APILEANCE CJFAY, OF SN FEL-ENCISC. CALFORNIA, .l CORPGR new CNTRLLNG i/EANS FOR UTGEZATEC TRAIN-STOPS.

lcation filed January ii 3.6.

This invoiition whites if) 'waives which zu'u, mniuiliiil 1n iieii' opei'iiiloii by ai iileience phen.. To nccmniiisii incise i vons'rucimi und gmsiioueci tu ihn Oliiui @ivnwns uf ihn ii. unisni thai ii' is impossible im' thv impose uif siipif io :i ship anni if i i lions shown in @iovziii n, iii@ nini-*rebasa vain, being shown in iS (man 0i' normal pcb HiiOn.

Serial $2,325.

Fig. u section of the nnnwlcnse mivu. the Suid vulv@ boing shown in iig ciused DO siin. i

This pui'iirfuiui inventiuu is used in cunicbizmtion with the mechanisms diaciosed, in niy @qi-pending nppiicniions Seiizii EL 3,59% fied ugusi 1.7, 12H5. und Serial R0. 55.42% iiied @violin il i915. n ihis conibiiuifion is induiied is :in @ionicnig n 'vaive- V which naw chosen to designati. H

uw umiielmisc vz ive. This mim is; iocumi the bruits.

i which is i0 mimi ti vulve smi 541 ai; :iced as i@ Cupeinie with n vnlw i'i rv mi Y@ is secured to :i vulve stein ioii .39 @params in :1 uyiindir il exten lifiin the non-release miv@ swing f jiiciingg iii@ Qenfei ufr.' the pi. :i rmi ES invii ifi :ninpmi ciw-ic' Lim uwer @mi of iii@ vulva. rmi suini ai s; 5S im@ 39 iiaziasing' hiuiiiii zin si; @ning 5U gummi lease the brakes. The fact that the valve 57 is seated, however, will not prevent it from being lifted from its seat when the engineer manipulates his automatic brake valve 53 so that it will open a port in said valve to atmosphere, thereby reducing the pressure in the thamber 54 whichV will permit the valve 57 `to be. unseated by the eX- cess pressure in the brake pipe 51, and this will thereby cause a venting ot the pressure in the brake pipe 51, which will result in a further and heavier application ot the brakes.

The cooperation of the non-release valve V is closely related to the structure disclosed in my cro-pending application above referred to, and the coperation of these parts will now be brieflydescribed. Normally, air is supplied to the diaphragm valve through pipes 63, 63a and 6, supplying iuid pressure to the passage 7 communieating with the chamber (l, which in turn communicates with the chamber g by means oi' small ports c and f. The chamber g communicates bv means of the port m with the pipe In, which is a branch of pipe 22 leading to a tandem valve 23, which latter valve is described in my cti-pending application Serial No. 55,424. The other end of the pipe 2Q leads to the venting valve, not shown, of the engine equipment. The branch pipe 64 connects the pipe 22 with the chamber 60 in the cylinder C attached to the non-release valve V. Normally, main reservoir fluid pressure flows from the engineers valve 53 through pipes 63, 631 and 6 to the passage 7 and into the chamber a'.

'through the ports e and f, and thence into the chamber g. Pressure in the chamber g acts against a diaphragm h of greater area than thediaphragm 2'., tending to keep normally closed the valve connected thereto. `When pressure in the pipe '22 is vented by means of the venting valve in the engine equipment, a reduction of pressure will take place in the chamber g of the diaphragm valve and also in the chamber 60 attached to the non-release valve, which will operate to seat the valve 57, thereby cutting yoff communication between the engineers automatic brake valve and the brake pipe 51. At the same time the unseating of the valve j permits pressure .to enter the cylinder 5,' which will force forward the piston 3 in the direction of the arrow, which carries the piston rod 9 to which is attached a venting tube 11. When the venting tube 11 has moved a short `distance. the slot 15 therein will move into the cylinder 2 which is connected to the brake pipe 5l by means of pipe 14 and will thereby vent the pressure in the brake pipe through the slot 15 and apertures 16 in the vent tube, thus giving a service application of the air brake.

ln order to reset the train stop`and the non-release valve, pressure must bey supplied to the chamber g of the diaphragm valve and the chamber l() or' thc'non-release valve cylinder C. lt is only possible to supply this pressure by operating the tandem valve 23, and this valve is located on the train stop device in such position on the engine that it necessary for the engineer to dismount from his cab in order to gain access to said valve.

The valve is operated by pressing a button 7 secured to the end of a lever 44 which has an integral head 46 which cooperates with the valve stems 36 and 37 of the said tandem valve. rl`his tandem valve 23 obtains its supply `ot` air trom the pipeI 6 which is connected by the pipes 63 and (33 to the engineers automatic brake valve which receives its supply from the main reservoir as shown.

lt will thus be seen that in order to release the brakes and reset the train stop device, the engineer must bring his train to a,

stop, dismount and operate the tandem` valve.

Levers and B are attached to valves in the pipes 5:2 and 22, respectively, and are utilized to operate the valves to which they are connected to close the same to put an engine equipment out of commission when 'two `or more engines are connected to the same train. in the position shown.

An air passage is provided in the wall of the cylinder C so located as to always lead to atmosphere from the chamber 71,-

ormed between the piston heads 59 and fland the wall of the cylinder C to allow air leakage between the piston heads and "cylinder Wall to escape to the atmosphere.

As many changes could be made in the above construction and many apparently widely different embodiments of my invention could be made without departing from the scope thereof, l intend that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

I desire it also to be understood that the language used in the following claims is intended to cover all of the generic and specific features of the invention herein described, and all statements of the scope of the invention which, as a matter ot language, might be said to fall therebetween.

' Having now described my invention, what l claim as new and desire tosecure by Letters Patent is: I

1. In an automatic train stop device for use with an air brake system having a brakeA pipe through which air may HOW to and from suitable air operated brake mechamsm; a normally open valve adapted to in- T hey are normally sealed open n il a lerrup; th@ flow. of air through said brake pipe 'oward said l; alie mechanism; a cyliA iler; a piston .novahlo wihin said cylin der and operatively associaefl fv'ih said faire lo hold lh@ Sama in is normallyv open condilion; a message ihroug'h which air may flow from Said brak@ )ipe to the oxtornal amoaphero; a normali;y closed 'alv for and o @paghe-are. uioaiac als? ein nar valw Qoma'olhag; lha aou o a 1' ilu-ouah aaiu pamM prossimo lionoll alive;

(sg-ge; means op@ aoil hy air andar for operating faul second mena, normally closafl valve for .v controlling' die Supply or :Iii: lo :said valro operating moana means mcluahnga iliac iaiihar subjertmi to varying am, and a air pressuwss for operating said lasl mentioned valv'.; a condui through which air under presSura ma] loe suplieil to the ohor @ml of Said o linfler o horvhy hold Said irt men'ionod 'ralvo in ivs normally open concliiong to the Said chamber lo thereby hold said last mentionod valve im its no1'- inally closed conclilion. and lo the operating moauS for said second niQnl-ioi'imlA wlw: a y

normally close@ manually opvracfl valve igor controllmg lire supply or air #o the s90- ond mentioned ond of said cylinder anal to said chamber; and lne-aus for relieving tho pressure of air in lhe second mentioned and o said cylinder and in said Chamber fo tha-eb); secure he cloging of Said first menlioiiell- Valve and a iow of air from the brake pipe through tho )assago aforesaid and to the extornal atu'iosplxer,

l. En an automatic rain slop (larice for use with an air brake suslom :wing a brake pip@ through which air 'from sui'ablo y flow to and air opera brlie mocha Y mism; a asm l i lo pip@ liou's; pugnali, vai" upon Saill Sra; lo tiwrehjlf' A Said bra foin `i iol man; a

n said cyliu( Q lhrough sa' 1 air under proa slam i sur@ to araba norma i); hold aaifl sealy; a pasaago u; 'ch ail n the brak@ the @Hilario a nora ally i 'low of air for simuln said u VL nvlnl'ioual for f Je lo open aial from tho aforesaid. lin lop llerco for fom ha fing a lu'alo nml brake 'oo fion' of reverse diable .Yi'hiii 1 aming; upon Haul valve -o lho sama in ils open condi-- or supply* i under prix@ cylinrlar o hferohy hohl said I in is l formally open cfulitioi a pas- .A'ago lu-ong which air ma?,Y ow 'from the brake, pipo no ih@ external algmosihrro; a normally closed Yalr@ for Conollngg' the flow oi" air through Saul ii-waage; means op araed hy air unllor press. ro 'lor opvralng said laav incnionei'l valve; and means `for sinlulanoously relieving' lha prossure in sai@ cylinder lo thereby parnli. said rs. meliioned valve io doa and for admiting air undor pressure to the oporaing meanA for Said Second nienionml valve to opon the same and pormil', a flow of air from tha brake pipe luough. the passing/e aforesaid..

la an aulomalio l'rain stop device for use. with an air brake Systom having' a brake pipo hroug'h which air may flow to and from suiahlo air operated brake mechaoperati nism; a normally open valve adapted to interrupt the iow of air toward the brake mechanism; and to permitl a tree flow of air through the brake pipe in a reverse direction; means operated by air under pressure for holding said valve in its normally open condition; means for supplying air under pressure to said holding means; a passage through which air may flow from the brake pipe to the external atmosphere; a normally closed valve for controlling the ioiv of air through said passage; means operated by air under pressure for operating ysaid last mentioned valve; land means for simultaneously relieving the pressure to which said holding means is subjected to thereby permit said first mentioned valve to close, and for admitting air under pressure to the operating means for said second mentioned valve to open the same and permit a How of air from the brake pipe through the passage aforesaid;

G. In an automatic train stop device for use with an air brake system having a. brake pipe through which air may flow to and from suitable air operated brake mechanism; a normally open valve adapted to interrupt the tlovv of air toward the brake mechanism, and to permit 1 free ioW of air through the brake pipe in a reverse direction; means operated b v air under pressure Jfor holding said valve in its normally open condition; a conduit leading to and through which air under pressure may be sup lied te said holding means a normally closed)manually operated valve for controlling the How of air through said Conduit; a passage through which air may flow from the brake pipe to the external atmosphere; a normally closed valve for controlling the flow of air through said passage; means operated by air under pressure for operating said last mentioned valve; and means vfor simultaneously relieving the pressure to which said holding means is subjected to thereby permit said rst mentioned valve to close, and for admitting air under pressure to the operating means l for said second mentioned valve to open the same and permit a iiow ot air from the brake pipe through the passage aforesaid.

7. In an automatic train stop device for use with an air brake system having a. brake pipe through which air may 'liovv to and from suitable air operated brake mechanism; a valve seat past which the air flowing in said brake pipe Hows: a puppet valve adapted to seat upon said seat to thereby in- `terrupt the How ot air toward said brake mechanism, and to move away from its seat to permit a How of air in a reverse direction; a stem extending from said valve: a cylinder; a piston movable Within said cylinder and acting upon said valve through said stem; means for subjecting one end of Lese-,eee

said piston to the pressure of the air` in the brake pipe; means for supplying air under pressure to the other end ot' said cylinder to thereby normally hold said valve otf its seat; a passage through which air may iiow from the brake pipe to the external atmosphere; a normally closed valve for controlling the flow of air through said passage; and means for simultaneously relieving the pressure in said cylinder whereby said first mentioned valve is held otf its seat to thereby permit said valve to close, and for operating said second mentioned valve to open the same and permit a flow of air from the brake pipe through the passage aforesaid.

8. 1n an automatic train stop device for use with an air brake system having a brake pipe through which air may iiow to and from suitable air operated brake mechanism; a valve seat past which the air flowing in said brake pipe flows; a puppet valve adapted to seat upon said seat to therebyinterrupt the flow of air toward said brake mechanism, and to move away from its seat to permit a flow of air in a reverse direction; a stem extending from said valve; a cylinder; a piston movable within said cylinder and acting upon said valve through said stem; means for subjecting one end oit said piston to the pressure of the air in the brake pipe; a conduit leading to and through which air under pressure may be supplied to the other end of said cylinder to thereby normally hold said valve oii its seat: y a normally closed manually operated valve for controlling the flow of air through said conduit; a passage through which ,air may liow from the brake pipe to the external atmosphere: a normally closed valve for controlling the flow of air through said passage; and means for simultaneously relieving the pressure in said cylinder.whereby said first mentioned valve is held olil its seat to thereby permit said valve to close` and for operating said second mentioned valve to open the same and permit a flow of air from the brake pipe through the passage aforesaid.

9. ln an automat-ic train stop device for use with an air brake system having a brake pipe through which air may iow to and from suitable air operated brake mechanism; a normally open valve adapted to interrupt the flow of air through said brake pipe toward said brake mechanism; a cylin- A der: a piston movable within said cylinder and operatively associated with said valve to hold it in its normally open condition; a conduit leading into said 'cylinder and through Which air under pressure may be supplied thereto to thereby hold-said valve in its normally open condition; a normally, closed manually operable Valve for controlling the How of air through said conduit; and means for relieving said piston Lee-ense from the action of air under pressure to thereby permit said valve to close.

l0. ln an automatic train stop device for use with an air brake system having a brake pipe through which air may flow to and from suitable air operated brake mechanism; a normally open valve adapted to interrupt the flow of air through said brake pipe toward said brake mechanism; a. cylinder; a piston movable within said cylinder and operatively associated with said valve to hold it in its normally open condition; a conduit leading into saidA cylinder and through which air under pressure may be supplied thereto to thereby hold said valve in its normally open condition; a normally closed manually operable valve for controlling the flow of air through said conduit; a passage through which air may flow from the brake pipe to the external atmosphere; a normally closed valve for controlling the flow of air through said passage; means operated by air under pressure for operating said valve; a normally closed valve for controlling the 'low of air to said valve operating' means; means whereby said last mentioned valve is'held in its closed condition by air under pressure supplied through the conduit aforesaid; and means for relieving the air pressure in said conduit to thereby `permit said first mentioned valve to close and said last mentioned valve to open, whereby air may flow' to the means aforesaid whereby the valve which controls the passage through which air Hows from the brake pipe to the external atmosphere is operated, to thereby operate the said means and open said valve. y

1l. In an automatic train stop device for use with an air brake system having a brake pipe throu h which air may flow to and from suitable air operated brake mechanism; a normally open valve adaptedto interrupt the flow of air toward the brake mechanism; a cylinder; a piston movable Within said cylinder and acting upon said valve to normally hold the same in its open condition; means for supplying air under .pressure to said cylinder to thereby hold said valve in its normally open condition; a passage through which air may flow from the brake pipe to the external atmosphere; a normally closed valve for controlling the flow of air through said passage; means operated by air under pressure for operating said last mentioned valve; and means for simultaneously relieving the pressure in s'aid cvl- Y inder to thereby permit said iii-st mentioned valve to close, and for admitting air under pressure te the operating means for said second mentioned valve to open the same and permit a fiow of air from the brake pipe through the passage aforesaid*the op verating means for said second mentioned pipe through which air may tlow to and from suitable air operated brake mechanism; a normally open Valve adapted to interrupt the flow of air toward the brake mechanism, a cylinder; a piston movable within said cylinder and acting upon said valve t0 normally hold the same in its open condition; means for supplying air under pressure to said cylinder to thereby hold said valve in its normally open condition; a passage through which air may flow from the brake pipe tot-he external atmosphere; a normally closed valve for controlling the tlow of air through said passage; means opperated b v air under pressure for operating said last mentioned valve; and means for simultaneously relieving the pressure in said cylinder to thereby permit said first mentionedvalve to close, and for admitting air under pressure 'to the operating means for said second mentioned valve to open the same and permit a i'iow of air from the brake pipe through the passage aforesaid-the operating means for said second mentioned valve including a piston operatively connected therewith; a cylinder in which said piston operates; a. normally closed valve for controlling the flow of air under pressure into said cylinder; an operating member operatively connected with said valve; means for subjecting one side of said member to a constant air pressure; and means for'subjecting the other side of said member to a variable air pressure. y

In witness whereof I have hereunto set my hand at Oroville, county of Butte and State of California, this 17th day of January, 1916.

HOWARD S. FOLKER.

In presence of- HARRY L. RoDnRioK. JAMES HAVEY. 

